Improved appakatus foe making extracts feom baek and other mateeials



1. W. JONES.

Apparatus for MakngExtracts from -Bark and Other Materials.

Patented Nov. 5, 1867.

fx vengar'.-

Y nl] gleiten gisten ste-nt @Hire lJAMES w. JONES, or cUMBEnL-A'ND, MARYLAND.

Letters Patent No. 70,439, dated Novemlic?` 5, 1867.

IMPROVED APPARATUS FOR MAKING BXTRAGTS FROM BABK AND OTHER MATERIALS.

@te tlgrhirle nicht' in. in ilgrse trtta's @stent mit uniting part nf tigt tante.

TO ALL WHOM IT MAY CONCERN: y l

Beit known that I, JAMES W. JONES, of Cumberland, Alleghany county, Maryland, .have made certain new and useful Improvements in Making Extracts by Upward Hydraulic Pressure; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, and to thc letters of reference marked thereon, makinga part of this specification, in which- FigureA 1 is a plan view.l

Figure-2 is alvertical section on the line y y of iig. 1.

Figure 3 is a vertical section on the line :z: :v ofiig. 1.

Figure 4 represents sections of the box, pipe, and dead-eye. v

The nature of myinvention consists in an improved method of extracting tannin from bark, or the strength from any other substance from which extracts' are obtained, by means of upward hydraulic pressure, when the same isapplied to a vat, lea9h-tub, or other vessel having 'a false bottom, and also provided with a box pipe in I which are sliding valves.

. of valve-rods f', which rest in small boxes F in the corner of the vat.

Y A Al A2 A3 are four vats or leach-tubs, of ordinary construction, and water-tight. vArep'resents theframe of an ordinary vat. A3 represents the vat having the joist a a, which supports the false bottom attached. A1 A2 represent the vats with the false bottoms C C in position, the first being constructed of slats, ci', and the other of al simple plate, having numerous perforations, c. D is a box pipe, which conveys the water or liquor tothe desired position Vunder the false bottom C. This box pipe D is provided with two sliding valves, d2. d3, one arranged in the upper portion of its face, and thc other directly across the upper portion of its throat. These sliding valves work in suitable grooves arranged in the front and sides of the pipe. By means of a small opening, d, these pipes are connected `with the dead-eye E of the adjoining vat. When it is desired to out oif allcommw nication between the vats, the same is readily accomplished by simply inserting the plug d. EE are dead-eyes, which are attached to the side of the vats or tubs, and'directly opposite the box pipe D ofthe next vat. The

tops of these dead-eyes are closed, which renders them perfectly water-tight, except at their lower end, which is" on a level with-the false bottom C, and iei't open, and is thus enabled to receive the water or liquor, in order toy 'convey it to the box pipe of the adjoining vat. In each of these vats or leach-tubs A AI A2 As there is n. small opening, which connects with the trough Gr, which extends along the centre of the series of vats and their enti-rel length, by'means of which, when desired, the liquor can be easily drawn o'. These openings are closed by means Theoperation of my invention is as follows: The vats er leach-tubs A A1 AzlAa are filled with ground bark. Water is conveyed to one of them, A, for instance, by means cfa pump, jet, hose pipe, or any other convenient appliance. The water passes down through the bark and under the false bottom C. The plug d is then withdrawn, which allows free communication with the vat A1 by means of the opening all. The sliding valved2 is inserted in the face ofthe box pipe D,'and the slide dis lthen withdrawn from across its throat, which leaves the box D perfectly water-tight.V Thus it will beseen, as the vat A is gradually filling with water, thev false bottom will be raised, and at the same time the liquor will enter the dead-eyeE, its height therein "being always necessarily the same as that of the vat, so that when the vat is illed to a suicient degree'to be on la line .with the opening d1, the liquorin the dead-eye E will ow into the box pipe D, through the same down under ,the false'bottom C of the vat A1.y When the vat A1 is filled, the plug d can be inserted, which cuts oit' all commu -nication between the vats A and Al, and the box pipe D can also bo entirely closed byin'serting the sliding valve da. The vat is then permitted to stand and the bark to macerate, which is constantly subjected to the upward hydraulic pressure by means of the false bottom. When the vat has been allowed to stand sufiiciently long to thoroughly extract all the tannin, the same operation can be repeated in the adjoining vat, or, if desired, the liquor can be drawn o simply by withdrawing the valve-rodf, which, through the opening f, will convey the liquor -to the discharge-trough Gr.

Thus it will be seen that, although I have shown a series of four vats, one is only necessary to fully illustrate the invention. The great advantage of the upward hydraulic pressure will, upon a moments reflection, readily suggest itself to any one familiar with the arts to which my invention is applicable. In preparing the bark, some of the particles are reduced to mere atoms. These being lighter than the larger pieces, naturally re'st on the top. When the pressure is applied from above, these atoms or capillaries are driven down through the interstices between the larger portions of the bark.l Experience not o'nly shows that many of these small particles adhere to the larger piccesof bark, but frequently coat the same, and so'eompletely is this sometimes done that they are rendered impervious to the action of the liquid, and, as a consequence, the tannin cannot be extracted; and again the coloring matter and other impurities are forced to the bottom ofthe vat, and are there mixed with the liquor.

By my plan all these diilieulties are successfully surmounted. The pressure being upwards, all the interstices between the bark are left open for the free action of' the liquid, and the smallpartieles are driven to the top of the vat, where they can float or commingle with the coloring and other injurious matters. `These will all blend together in the form of n. sediment, which collects around the upper portions of the side of the vat.,

I have thus described' my invention as applied to the art of tanning. ButI do not desire to be understood` as limiting myself to this specific application, as it can be used with equal advantage in extracting,r the substance from any material, as, for instance, in extracting the dyeing matter from all those species of wood which -are commonly known as dye-wood. It can also he advantageously and successfully used by the chemist and druggist, as it is entirely applicable to the work of the laboratory.'

Having thus fully described my invention, what I claim therein as new, and desire tosccure by Letters Patent, is

1. Extracting the strength from bark or other material by upward hydraulic pressure, when the same is.

applied to a vessel. having a. box pipe with sliding valves and a false perforatcd'bottom, substantially as described. 2. Ilclaim the false bottom C and pipe D, havingl sliding valves J3 d3, when the same are combined and operated substantially as described and for the'purpose set forth.

In testimony whereof I havesigned my name to this specification in the presence of two subscribing witnesses.

JAS. W. JONES.

Witnesses:

JOHN D. BLoon, JOHN S. HOLLINGSHEAD. 

